Reply To: Windows Sever 2012 Under KVM under vSMP

if you application needs high core count the KVM VM will need to have high core count. We have not seen WS2012 scaling if the number of cores used by single KVM VM used for WS2012 exceed cores of one node.
On the other hand, if you just require large memory for your VM (WS2012), or if you are looking to scale up number of cores used by Linux than we have a pretty good solution for you.